Group Observed Genotypes Allele Frequency Allelic Chi-square Value, P Value , Odds ratio and 95 % CI II ID DD I D Schizophrenia N =100 17 62 21 0.48 0.52 4.57, P = 0.032 , OR = 1.93, (1.05- 3.53) Controls N = 100 40 49 11 0.64 0.36

Table 2: Observed Genotypes and allele frequency of the ACE Polymorphism (Insertion/Deletion; I/D) in Schizophrenia patients and controls.